Lock for sliding windows.



R L L ma S HW GD ,NDN I W G N I D I L S R O P K C 0 L C. W. ANTILL & W.L.

APPLICATION FILED NOV. 30, 1912. EENEWED MAR. 30, 1914.

Patented Nov. 10.1914.

WVITNESSES turni)v srn'rps PATENT OFFICE.

CHARLES W. .ANTILL .AND WILLIAM L. SCHlvlOLLE, OF SAN FRANCISCO,CALIFORNIA;

SAD SCHMOLLE ASSIGNOR TOvANTILL PATENT 'TINDCW'` COMPANY, 0F SAN FRAN-CISCO, CALI'ORNIA, A. CORPORATION 0F CALIFORNIA.

LOCK FOR SLIDING WINDOWS.

Specification of Letters Patent. l vPaix-intent NOV. 10, 1914.

Application led November' 30, 1912, Serial No. 734,279. Renewed March30, 1914. Serial No. 828,160.

To all 'whom it may concern: Y

Be it lrnown that we, CHARLES W. NTILL and WILLIAM L. SCHMOLLE, subjectsof the King ot Great Britain, residing at San. Francisco, in the countyof San Francisco and State of California7 have invented new and usefulImprovements in Locks tor Sliding l/Vindows, of which the following is aspecification. I A 4 The object of the present invention is to provide awindow lock adapted for use in windows having horizontally slidingsashes, by'which lock such sashes can be secured in any one of severalpositions and which will be neat and inconspi'cuous in appearance andconvenient -in use.

v cured to, or formed integral with, a metal ln the accompanyingdrawing, Figure l is a iti-ont elevation of the lower portion oi awindow equipped with ourV invention, the lower portion 'of one sashbeing broken away to sho-w the locking device; Fig. 2 is a'horizontalsection ot the window in its open position; lig is' an enlarged verticalsection through a ivot oi: the window sash; Fig. t is an en arged brokenplan view ot a slideway and one ol the shoes therein; Fie. 5 isl atransverse secf tion on the line 5-5 but with the locking dog in theVinoperative position; Fig. 6 is a similar section showing the dog inits operative position. v

Referring to the drawing, l indicates a window traine, having a sill 2and vertical side ,pieces 3. Resting upon said sill and having its 4endssecured between said side pieces is a slideway Llathe sides of which are:Formed with upwardly flaring innerl surfaces. ln said slideway canslide shoes 6,

having downwardly converging sides. Each shoe is'tormed near its outerendwith an aperture in which is pivoted or stepped a pivot pin 7,depending from, and rigidly seplate 8, secured upon the horizontal sideoit' a longitudinal angular recess 5 formed in the bottbni of each sash9 at its inner side, said sashes being hinged together, as shown at l1,at their inner or adiacent vertical 4 edges. By sliding said shoes awaytrom one another in the slideway, the sashes can be moved into the oneplane and the window closed while by sliding the shoes in the oppositedirection, or toward one an-V other, the sashes canbe placed at an anglewith one another and the window opened. A suitable locking device 13 isprovided to lock the sashes in their closed position.

'lhe general construction, however, of sashes so movable forms no partoi our present invention. The outer wall of said slideway is formed,preferably at regular intervals with slots or recesses 12, open at thetop. ilntothese recesses are adapted to swing locking dogs 15, containedin recesses 1liin said shoes and pivoted on horizontal longitudinalpivot pins 17 secured in the shoes, across said recesses 1i, each recessbeing formed at the top with an extension 16 suiiiciently large for theinsertion of a finger to engage the rear portion of the. loci@ ing' dogto swing it troni their inoperative to. their operative position tocause it to engage a slot 12. The upper edge of said dog will, in itsinoperative position, rest in the recess 14C substantially flush withthe upper edge of the slideway, so as to be out of the way of the windowsash when inoving to its closed position. Since the bottoni of eachsashl at its outer side is not cut away, it entirely closes andconceals, when in its closed position, the slots or recesses 1Q in theouter wall of the slideway, so that the window is of usual appearance.lll/'e claim zy In combination with a window frame having a' windowsill, window sashes hinged together at inner vertical edges, the loweredges of said window sashes being formed on their inner sides withlongitudinal angular.recesses, a slideway secured upon said sill, andreceived in said recesses of the sashes and adapted to be concealed bythe outer portions of the sashes when in their closed position, theouter wall of said slide way having slots or recesses open at the top,shoes slidable in the slideway to which In testimny whereof We havehereunto set our hands in the presence of two subscribing Witnesses.

' CHARLES W. ANTILL.

`WILLIAM L. SCHMOLLE. Vtnesses z FRANCIS M. WRIGHT,

D. B. RICHARDS.

